Publicación: Amino-grafted basic mesoporous silicas: a type of highly performant catalysts for the green synthesis of 2-amino-4H-chromenes
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Fecha
2024-03-15
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info:eu-repo/semantics/openAccess
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Elsevier
Resumen
Novel series of amino-grafted mesoporous silica materials applied to the green and efficient synthesis of 2-amino-4H-chromenes, from salicylaldehydes and ethyl cyanoacetate, under mild and free-solvent conditions, is herein reported for the first time. These catalysts are easily prepared by using the post-synthetic method, by functionalizing the SBA-15 silica with the corresponding amino silanes. The observed catalytic performance is mainly controlled by the type and concentration of basic sites. The methodology herein reported could be considered as an environmentally friendly alternative for the selective chromene synthesis, which allows to achieve high yields in short reaction times using notably small amounts of the catalysts. The experimental results are also supported with theoretical calculations, which suggest that the amine groups at the silica surface are behind the observed catalytic performance with the assistance of the silica matrix.
Descripción
This is an Accepted Manuscript of an article published by Elsevier in "Catalysis Today, 430", available at: https://doi.org/10.1016/j.cattod.2024.114515
Este es el manuscrito aceptado del artículo publicado por Elsevier en "Catalysis Today, 430", disponible en línea: https://doi.org/10.1016/j.cattod.2024.114515
Este es el manuscrito aceptado del artículo publicado por Elsevier en "Catalysis Today, 430", disponible en línea: https://doi.org/10.1016/j.cattod.2024.114515
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Palabras clave
Amino-grafted silica, heterogeneous catalysts, chromene derivatives, fine chemicals
Citación
González-Rodal, D., Godino-Ojer, M., Palomino-Cabello, C., Turnes-Palomino, G., López-Peinado, A. J., & Pérez-Mayoral, E. (2024). Amino-grafted basic mesoporous silicas: a type of highly performant catalysts for the green synthesis of 2-amino-4H-chromenes. Catalysis Today, 430. https://doi.org/10.1016/j.cattod.2024.114515
Centro
Facultad de Ciencias
Departamento
Química Inorgánica y Química Técnica